Consistent with the pattern of transposon integration, analysis of Nfib/Foxp1 mRNA expression and NFIB/FOXP1 protein abundance in the LM cell lines revealed enhanced levels of FOXP1 in all LM cell lines but selective elevation of NFIB in LM lines with high metastatic potential (Fig 1E–G). The gene discussed is FOXP1; the disease is lymphangioma.